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John is taking statistics and biology courses this semester. The probability John will get an A in statistics is 0.4. The probability John will get

John is taking statistics and biology courses this semester. The probability John will get an A in statistics is 0.4. The probability John will get an A in biology is 0.3. The probability John will get an A in both statistics and biology is 0.15. What is the probability that John will get at least one A between his statistics and biology courses? 0.7 0.55 0.12 0.15

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